For overcoming the shortcoming, a phase-only optical filter is used to change the phase of annular zones of coherent extended source.
为了克服这个缺点，提出了使用相位滤波器改变相干面光源不同环区的相位。
It was found that the coherent length became shorter and the spectrum resolving power became lower as a result of solid Angle produced by the extended light source.
分析表明，扩展光源存在的立体角导致系统的相干长度变短，光谱分辨率降低。
It was found that the coherent length became shorter and the spectrum resolving power became lower as a result of solid Angle produced by the extended light source.
分析表明，扩展光源存在的立体角导致系统的相干长度变短，光谱分辨率降低。
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